Improvement in self-closing hatchways



u; MOORE. Self-Closing Hatchway.

N0.l 63,509, Patented May18, 1875.

FIQJIQ THE GRAPHIC CO.PHOTO LITH.39&4\ PARK PLACEJLY.

UNITED STATES PATENT OFFICE.

DANIEL MOORE, OF BROOKLYN, NEW YORK, ASSIGNOR TO SAMUEL I.

. THURSBY, OF SAME PLACE.

IMPROVEMENT IN SELF-CLOSING HATCHWAYS.

Specification forming part of Letters Patent No. 1 63,509, dated May 18,1875; application filed May 1, 1875.

To all whom it may concern Be it known that I, DANIEL MOORE, ofBrooklyn, Kings county, in the State of New York, have invented certainImprovements in Elevator-Hatchways, of which the following is aspecification:

My invention consists, primarily, in the use of perfectly tighthatch-covers, in combination with an elevator-carriage, which isoperated by means of mechanism situated beneath it. An example of suchmechanism is exhibited in What is known as the hydraulic telescopicelevator, which consists of a platform supported upon a central piston,and a system of telescopic tubes projected by the introduction of fluidinto the tubes, and retracted by gravity when the fluid is let out ofthe tubes.

My invention includes the arrangement of elastic bearings or cushions,to prevent any shock or noise when the hatches are lifted from, ordeposited upon, their seats, and also devices for centralizing andguiding the hatches, for the purpose of insuring their deposit upontheir respective seats.

Owing to the absence of any apertures for the passage of thehoisting-ropes through my hatches, they operate as valves to completelyclose the floor-openings, and thus prevent any draft or communication ofsparks from one floor to another.

The accompanying drawings exhibit my invention applied in connectionwith a hydraulic elevator, and are as follows, viz: V

Figure 1 is a vertical section of a hatchway, showing two floors, and ahydraulic elevator partly ascended, and having lifted the hatch-coverfrom the second floor; Fig. 2, a top view of my hatch-cover; Fig. 3, avertical section, showing elevator carrying two hatchcovers, andexhibiting operation of centralizing nipples and cavities.

A A represent the extension-tubes of a hydraulic elevator; to, theplatform or floor of a passengercarriage, and a the roof of the same. I)b are parallel vertical ways for guiding the carriage, &c. The firstfloor O is provided with my trap-door or hatch-cover c, the latterhaving projecting tongues c c, to engage the floor. The second floor D,with its hatch cover d, is provided with similar tongues d al in adifi'erent position. Vertical grooves 61 are formed in the edges of thesecond floor-opening, to allow the tongues c c of the lower hatch c topass freely, and corresponding projections d of the hatch d fill thegrooves d al I have not deemed it essential to exhibit my invention inconnection with more than one floor, it being obvious that it may beapplied to any required number of floors. Of course each additionalfloor must have either wider grooves or an increased number of grooves,to allow the tongues of the lower hatches to pass through; or,preferably, the floor-openings and their hatches may be varied in size,the first floor-hatch being smallest, the second fioor-hatch a littlelarger, and so on, so that each hatch will pass through, as required,any floor-openin g except the one where it belongs, which it willcompletely fill, and upon which it will be lodged and sustained as thecarriage descends.

Rubber cushions c e are inserted in the floors, so as to presentelasticfibearings for the tongues c c and d (1 Rubber nipples f f aresituated upon the upper sides of the hatches, (excepting the uppermosthatch,) to prevent shock from the upward thrust of the elevator, andthey also answer the purpose of a centralizing device, by engaging thecorresponding cavities ff on the under side of the next above succeedingdevice.

Similar rubber cushions are to be used on the roof of the elevator, totake against the under side of the lower hatch, although it is notdeemed necessary to show them in the drawing.

I do not claim the arrangement of hatches and floor-openingscorrespondingly varying in size or shape; but

I do claim I 1. The tight hatches, in combination with an elevatoroperated from below, substantially as described, and for the purposespecified.

2. The cushions c c, in combination with the hatches and elevator,substantially as described.

3. The centralizing nipples f f, and corresponding cavities f f, incombination with the elevator, substantially as described.

DANL. MOORE. Vitnesses:

EDWD. PAYSON, GEO. W. MIATT.

